Metal-working machine.



B. M. w. HANSQN.`

METAL WORKING MACHINE.

APPLICATION FILED TBB. Z4. 1908.

`Patented 001.25, 1910.

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Witnesses; Inventar: MWYIanSon yk.5Aorney,

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B. M. w. HANsoN.- METAL WORKING MACHINE. APPLICATION FILED FEB. 24,1908.

Patented 0ct.25,19 1o.

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B. M. W. HANSON. METAL WORK-ING MACHINE.

APPLICATION FILED rIzB.24,19oa. v

Patented 0Ct.25,1910.

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l13'. M. W. HANsoN.. METAL WORKING MACHINE.

APPLICATION FILED PEB. 24.1908.

974,056. v Patented 001;.25, 1910.

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UNITED sTATEs 1PATENT OFFICE.

BENGT M. HANSON, F HARTFORD, CONNECTICUT, ASSIGN-OR TO PRATT & WHITNEY'and 7 respectively for the reception of I engage the edge of a rib 3Tprojecting from COMPANY, OF HARTFORD. CONNECTICUT. A CORPORATION OF NEVIJERSEY.

METAL-WORKING MACHINE.

974,056 Specification of Letters Patent. Patented Oct, 25, 1910,

Application tiled February 24, 1908. Serial No. 417,558. l r i To allwhom 'it may concern: tubular spindles 8 and 9. Disposed between y Be itknown thatl, Biciso'r M. lV. HAN- said elevated portions is `a carriage10 SON, a subject of the King of Sweden. remounted on ways 11 extendingtransversely siding at. Hartford, in the county of Hartof the machine.

ford and. State of Connecticut, have in- 'ithin the bearing 4 is fitteda bushing 60 vented certain new and useful Improvel2 through whichextends a. sleeve 13 havinents in Metal-lVorking Machines, of which ing'a head 14 at one end and provided with the following is a specification.a nut- 15 and a washer 16 at the other end.

This invention relates to milling' machines A key 13 secured withintliehead of sleeve lo es cially adapted for forming slots or 13 engages aspline 17 in spindle 8 while 65 splliiencs and has for its object'.- theprovision surrounding said head and keyed thereto is of a machine havingtwo oppositely disa gear 418 in mesh with a. larger gear 19 rigid posedspindles carrying tools which may he with a shaft. 2O .which willhereinafter be caused to operate simultaneously on oppoii'ioi-e.fiillydescribed.- 15 site .sides of stock which issecured to a car- It isobvious from the foregoing descrip- 70 riage snitally mounted for reciprocation be.- tion that spin dle 8 may be fed longitudinally tween saidspindles. while receiving rotation from shaft 20 A further object of theinvention is'the through gears 18 and 19.*, A similar arprovision ofmeans for readily positioning rangement of gears (but one of which is v0 cei'tain elements of thc machine so that the shown) exists betweenshaft 20 and spindle 75 work to be done thereon may be accurately` t)except that an idler is interposed between and completely accomplishedwithout t'urthe gears corresponding to gears 18 and 19 ther attention ofthe operator. so that spindle 9 will he rotated in a directher objectsof the invent-ion will be tion opposite to that of spindle 8. 25,hereinafter Set fori-h. Fitted within bearings 5i and 7, surround- 80 Inthe accompanying drawings, Figui-e 1 ing,r spindles Q and 9, and hearingagainst is a"plan view of a milling machine concollars 8 and 9respectively are sleeves 21 strncted in accordance with my invention.and 22 having rack teeth on their under Fig. 2 is a plan view of thepower transsides in engagement i'esliectively with pinmission mechanism.Fie'. 3 isa detail view ions Q3 and 24. AEach of these pinions is 35 ofa partofthe spindle feed mechanism foi-ined integral with a shaft whichis looking in the direction of the arrow in mounted lraiis\-'ersel tospindles 8 and 9 Fig. 2. Fig. 4 is a longitudinal sectional andprevented from longitudinal displaceview on a vertical planepassing'through the ment by a screw ioi'nt e1iterin, r a groovespindles, parts being shown in elevation. therein and -each iaft' isprovided with a 90 Fig. 5 is a transverse sectional view on line pulley`cord and w'cight. all as shown in .5--5 of Fig. Fig. G is'a detail planview `ig. Said weights which tend to rotate of a portion of the carriageactuating niechthe pinions 23 and t in a direction that anism. Fig. 7 isa sectional view on line will withdraw the spindles S and il from l0 7-7of Fig. (i. l4`igs. 8. t). 10 and 1l are their work are designatedrespectivcliv hy 95 detail views of a 'visesuitable for holding 25 andQG. i squarestock in position upon the. carriage. lnthe bore of spindleS is a rod L7v having Figsjl), and 13 are detail views of a vise aholld'w end Q9 into which is threaded a suitable foizholding round stockiu position collet 30 provided with a beveled head 31 "3 upon thecarriage. Fig. l-t is a detail view conforming to a taper in the bore atthe 1.00 hereinafter described, and. Fig. l5 is a deend ot said spindle.At' 32 rod 2T is slightl)v tail View in section of a clutch hereinafterenlarged thereliy forming a shoulder which more particularly described.hears against the outer end of spindle and Like n'u'inerals designatesimilar parts at ltsaid rod is provided willi a hexagonaltlirolighont.'thil several views. part for the reception of a wrench. Bv 105 Referring tn 'thc drawings thtl numeral l 'turning this rod thecollet 30 may be made designates the l'ramc of the machine` nu` l-tograsp or release a tool shanl; as desired. incl-als 2 and 9 elevatedhollow portions llisertid in a linre 3A of rod '27 is a shaft 35 nthereofprovided with hearings 4 and 5i. and rigid with a head 36 whichis slotted to no ld the side of a gear 38 said rib being concen- I tricwith the liub of gear 38, which is secured between adjusting nuts 39 and40 g upon a threaded portion of a shaftl41 the ends of which arejournaled iii bushings -12 i land 43 carried res actively in bearings 44and 45 of the mac ine frame. 'llie rib 37 has a cam face 46 Vwhich bearsagainst a vhardened in 36 inserted transversely through the slotted head36. From its lowest point this cam face has a gradual rise extendingabout 9/10 of the way around the rib after which it has a comparativelysudden return to its lowest point. This conformation causes the spindleaffected thereb to be advanced at a desired uniform eed its quick returnat 46 being ac complished by means of the weight driven pinion inconnection therewith. 'lo receive the thrust of shaft 35 a hardened pin35 is placed in bore 34.

At theopposite end of the machine frame from gear 38 is a similar gear47 mounted upon the threaded portion of a shaft 48 between adjustingnuts 49 and 50, the ends of said shaft being journaled in bushings 51and 52 carried in bearings 53 and 54 respectively. rib 55 pro ectin fromgear 47 and concentric with t e hu thereof is provided with a cam face56 which performs the same function for spindle 9 that cani face 46 doesfor spindle8 therefore it is not necessai1 to describe at length theintervening etails of construction as their counterpart has alread beendescribed in con- 'nection with s indie 8. 'if

' In mesh wit gears 38 and 47 are piiiins 57 and 58 rpectively which arerigid with -a shaft 59 extending throughout the length of the machineframe and mounted in bearings 60 and 61 thereof. To the end of shaft 5:1which extends through bearing 61 is ke eda hand wheel 28.

- fteferring to Fig. 2 the numeral 62 designates a power shaft providedat its outer end 'with a step 'pulley 63 and at its inner end with a ear64 which meshes with a. gear 65 rigid wit shaft 20 which is journaled atits ends in bushings 43 and 52 'before inentioned.

Designated byeGG is one of the gears which are interposed tween shaft 20and spindle 9 and by 67 a small gear keyed upon shaft 20 intermediategears 19 and 66.

Mounted transversely of the machine below the horizontal planes ofshafts 2O and 59 is a shaft 68 extending through its outer bearing 69where it has keyed thereon a cam 70. At ,the inner extremity of thisshaft is a clutch member 68 which by any desirable t means (not shown mabe caused to clutch or release a gear 1 a 'acently and loosely mountedupon said shaft. A train of gearinlgeglomprising s ur ears 72 and ,73,worm'- w 74,"worm 5, c ange gears 76 and 77 and Spui' gear 7 8 isinterposed between gears 71 and (i7. Keyed to-the outer end ofv shaft 68is a gear 79 meshing with a pinion which is formed integral with the hub81 of a hand-wheel 82, said hand-Wheel be- 70 ing supported on a stud 83secured in a bracket 84 which also serves as a support for a guard 85surrounding gears 79 an 80 lVheii gear 71 is released by clutch member68 it -is obvious from the above description 75 that shaft 68 may berotated manually by means of hand-wheel 82 and that when said gear ismade rigid with. the clutch member 68 the shaft will be driven by powertransmitted from shaft 62 through gears 64 and v80 65, shaft 20, gear 67and so on through the gearing interposed between `said last mentionedgear and said shaft. v

In engagement with the cam groove 87 of cam 70 is a rollei stud 88depending from 85 one end of an arm 89 which is pivoted near its centeron a vertical stud-shaft 90 secured in the bracket 84. Slidably mountedin a T-slot 91 formed in the upper side of arm 89 is a standard 92through a perfora- 90.

tion 93 in the base of which projects the stein 95 of a T-bolt 96 whichis threaded to re" ceive a clamping iiut 97 having a handle 98.

An adjusting screw 99 rovided with a manipulating knob 100 is supportedby a 95 plate 101 secured to the free end of arm 89, said screw beingthreaded through the head of T-bolt 96. Fitted in a vertical bore 102 ofan overliangiiig arm 103 of the standard 92 is the stem 104 of a swivelblock 105, 1'00 said stem being grooved at 106 to receive the point of ascrew 107 which prevents it from vertical displacement. Passing througha bore 108 in the swivel block 105 and provided with knurled adjustingnuts 109 and 105 110 on either side thereof, is the reduced threaded end111 of an arm 112 the other end of which is pivotally secured by a nut113 on a stud 114 projecting from the under side of the carriage 10. Asthe roller stud 88 110' follows the conformation of cam-groove 87 anoscillation of-arm 89 about the stud shaft 90 is produced lwhich resultsin a reciprocatory motion being transmitted to the carriage 10 througharm 112. B adjusting 115 standard 92 along arm 89 there y varying themagnitude of the arc through which it travels the scope of thereciprocatory motion of the carriage may be varied and by adjusting theknurled nuts 109 and 110 the 120 effective length of arin 112 may bevaried thus changing the rela-tive position of the carriage upon ways11. Graduatios .at make it possible to accurately adjust stand-.- ard 92so as to produce the length' lof car- 125 ria e traveldesired.

n the outer edge of cami'O are t". o ro-I jections 116 and 117 in thepath o4 v w 'ich is a roller.118 secured to the free end, of an arm 119which is rigid with a rock-shaft '130' 120 mounted in bracket 121.ltrgid with at one end ofi the vise isa piu 157 haviuga.

the other end of said rock-shaft is an arm 122 connected by a link 1225to one arm 12t of a` bell-crank lever 125 which is loosely mounted -onshaft 56 between a collar 126 and a ratchet disk 127 which are rigidwilli said shaft, the ra'tcln-.t-disk being adapted to be engaged by a'atchet-pawl 12S lnouuted on the other arm 1211 of said bell-crank lever125. As the cam 7() rotates. rock-shaft 120 and the armsl rigidtherewith are caused to osei'llatc, said oscillation beingl transmittedthrou'rh link 123 to bell-crank lever 125i which tlirough the Ipawl-and-ratchet connection causes au intermittent rotation of shaftsuitable for rotating gears 38,

aml 47 so as to cause the cam faces 46 and 56 respectively thereonproper longitudinal feed ofthe spindles 8 and 9. Ali adjustableconnection 13() is provided between arm 122 and link 123 therebyaffordingr means for varying the throw of ratchet-paw] 12S, thusobviously changing the. amount of feed produced u mn the spindles ateach stroke of said ratc ietpawl. 'lhe projections 116 and 117 areformed opposite the extreme horizontal limits of the cam-groove 87 sothat the feed of thespindles will occur when the carriage reaches theend of its travel in' each reetion. l

Illustrated by Figs. S, t), and 11 is a vise suitable for holding:rrectangular` stock in place upon the carriage and comprising a hase1211, four uprights .132 and a top-plate 1213 all of which are securely)inned together as shown in Fie. 9. The ase 131 is secured upon thecarriage 10 by bolts 134 and 1215 threaded respectively into nuts 136and 1?7- in T-slot 13S. In a channel 139 between the uprights 1513 is anadjusting plate 1,4() composed of two wedges 141 am 142 adapted to beclamped together by a screw 14? passing through a counter-sunk slot'1411. in the lower wedge into either of the threaded holes 145 and .146in the upper wedge. 'lhe horizontal surface of the upper wedge. isprovided with grooves 147 and 1118 -for the reception of alining blocks1451. Above plate 14() aml equal in length thereto is a clamping piecebacked by clamping screws 150 and 15()2 4which are threaded in thetop-plate 1213. This clamp ing piece is of T-shape in cross section andis provided with sockets 151 in the. ends thereof' for the reception of)lnngers 152 hacked b v springs 15?, said plungers bearing against theuprights 132 with sullicicnt pressure to sustain the clamping piece`lult Istill allowing.; it to be readily placed as desired. Pins 151passing through elongated slots 152 in plungers prevent the loss of the.latter upon the \\'it'lulrawal of the clamping piece from taetween theuprights 1212. Inserted through holes iu uprights 1312.

to produce the knurled head 158. The center oit' this pm is in the samehorizontal plane as the center of the spindles and said pin may be convenicntly used as a gage in locating the stock to be operated upon as aportion of it eut away on a plane'tahrough its center as shown atI 155).

device for supporting round stock is illustrated in Figs. 12 and 13.Slidably mounted upon ways 16() and 161 of bases 162 and 163respectively are a clamp sup )ort 16+ and a center Support 165. The)ases 162 and 163 are secured upon the carriage by the usual T-slot nutsand bolts and the supports 161 'and`165 are split and provided withbolts 166 and 167 respectively by which the' are clamped to theirrespec-l tive ways. Threaded into the clamp support.. 16-1 on eitherside ot' a V-shaped groove 16S are bolts 16S) and 170. Slotted at 171and 172 in order that it may be readily placed upon bolts 16S) and 17()is a clamp 173 adapted to engage stock v177 and provided on one sidewith a rib 171 which makes it' possible by reversing said clamp from theposition shown in ["ig. 12 to secure stock having a diameter much lessthan the dept-h ol the Y V-groove. A center 175 secured in support 165by screw 1.76 supports one end of stock 177 which is prevented fromlongitudinal displacement away from said center `by the clamping member.

ln the operation of the. machine it' hollow stock is to he worked thegears 1H and #t7 may'he positioned so that the corresponding high and owparts ot' cam faces 46 and 56 will be directly opposite each other, butIit the stock is solid as shown in Fig. 1l it will be nece y t'o positionone of the cam faces (46) .slightly in advance of the other (47) so thatthe tool actuated by the former will begin to retract before theA oneactuated by the .latter reaches its extreme depth of feed. 'l`heconcentric ribs 37 and are .grathtated adjacent their respective camfaces so that they 'may be set to produce any desired precisionizeddepth of feed within the existing limits.

After the stock to be worked has been secured upon the carriage,approxiniately in its required longitudinal position it may he:wcurately positioned with respect. to the tool-spindles by adjustingtheetl'ective length of arm ,112 by means of knurled nuts 109 and. 110,and furthermore the nec( sary scope of reciprocation for the carriage toproduce the required length of slot or spline may be cxactlv obtained bysetting the adjustable standard H2 to register with the graduation markon scale 180 which corre- 'spouds to said required length of slot orSimilarly tbc feed of the spindles may bc tested by rotating hand-wheel28.

'lhis invention is not limited to the exact disposition of elementsillustrated and described, for changes may be made therein withoutdeparture from said invention.

Having thus described my invention what I claim is,-

- 1. The combination of a reciprocatory carriage, a pair of rotary,endwise movable spindles at o )posite sides of said carriage, aratchet-wheel, a pawl Yfor operating t-he ratchet-wheel, means forcausing thel awl to operate the ratchet wheel at the n s of the strokesof the carriage, and means for transferring the etl'ect of saidratchetwheel to both spindles to advance the same.

2. The combination ofareciprocatory carriage, a pair of rotary, endwisemovable spindles at. oppositesides of said'carriage, a

pair of devices to ilnpart an endwise thrust` to said spindles toadvance the same, a shaft, means for transferrin the effect of saidshaft to both said devices, a ratchet-wheel fastened to said shaft, apawl, and means for causing said pawl to operate saidratchetwheel at theends of the carriage strokes.,

3. The combination with a machine-frame,

I a carriage mounted thereon and tool-spindles journaled on oppositesi'des o'f said carriage, of means for reciprocating said carriage; camsfor producing longitudinal movement ofthe tool-spindles; means inconnection with the carria e reciprocating' mechanism for intermittent yadvancing said cams; and means for varyin the amount of the inter;mittent advance t ereof.

4. The combination of a carriage, a pair of rotary, endwise movable toospindles mounted at opposite sides of said carria e, said carriage beingreciprocatory in ,a irection transverse to the axes of movement of thespindles, mechanism -for reciprocating said carriage, independentlyadjustable cams for varyi the spindles, an means actuated by the carriareciprocating mechanism for turning sai cams to feed the spindles.

5. The combination with a machine-frame, a carriage mounted'thereon andtool-spindles journaled on opposite. sides of said carriage-.,'of powerdriven mechanism for reci rocating `the carriage; means for manua yoperating the carriage reciprocating mechanism; mechanism in connect-ionwit the carriage 'reciprocating' mechanism for causing the longitudinalmovement of the tool-spindles; and'means for manually 'opf erating aportion of said last mentioned mechanism to cause the longitudinalmovement of the tool-spindles independently of the carriagereciprocating mechanism. I

6.' The combination, with a support, of a' tool-spindle journaledtherein; a-rod inthe spmd e and having s. bore at its rear end;

the amount of movement ofa shaft fitted-in said bore; a lug betweenbraced by the head, and bearing against.'L

said in.

7 he combination, with a work-support, of a pitman pivoted thereto; saidpitman having screw-threaded ortions; of al ivsaid arm; a perforatedswivel block secured to the bracket; means whereb said swivel block maybe adjusted longitu inally of the ivoted arm nuts on each side of theswivel lock and engaging the threaded portion of the pitman; and meanscarried by the pivoted arm whereby the extent of adjustment of theswivel block and bracket may be determined.

48. The combination, with a carriage, of a ,work-support thereon; aVpair of tool-spindles, one on each side of Said work-support; gearingfor rotating said tool-spindles; cams aving graduated rims for actuatingthe oted arm; a bracket ad]ustably mounte on tool-spindles; gearscarried by the cams; a

shaft; pinions rigid with said shaft and in mesh with the cam gears; andmeans for intermittingly rotating said shaft. y 9. In a machine of theclass described the combination with a carriage, of a rod or pitmanhaving one end pivoted thereto; a-,

10. In amachirie of the class described the combination with a pair oftool-spindles and a carriage mounted between said tool-spindies, of acam; mechanism actuated by said cam for reciprocating the carriage; arockshaft; elements on said cani for actuating the rock-shaft; a pair ofears; mechanism actuated by the rock-shaft or intermittingly rotatingsaid gears; and cams rigid with said gears for advancing thetool-spindles.

11. The combination of a carriage, a pair of rotary endwise movablespindles at opposite sides of the carria the 4latter being reciprocatoryin a direction transverse to the axes of said spindles, a cam,connections between the cam and the carriage for operating the latter,and means also actuated from said cam for advancing said spindles.

12. The combination! of-a carriage, spindles at opposite sides of saidcarriage sa'id spindles being `rotative and endwise movable andthe-carriage being reciproca-tory in a di ecton transverse to'the axes fsaid spindles, a rotary cam, connections between said cam and thecarriage for' reciprocating .the

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latter, and means associated with said cam for intermittently operatingsaid spindles.

13. The combination ot a carriage, rotary spindles mountedA at oppositesides of said carriage and movable in the direction of their'axes towardand from the carriage the latter being reciprocatory in a directiontransverse to said axes, a cam, lconnections between said cam and thecarriage for reciprocating the latter, a movably mounted device, the camhaving means to operate said movably mounted device, and means actuatedby said inovably mounted device for advancing the spindles. v

14. The combina tion of a carriage, rotary spindles mounted at oppositesides of the carriage and movable in the direction of their axes thecarriage being rcciprocatory in a direction transverse to said axes, acam Inounted for rotation, means operated by said cam for operating thecarriage said cam having projections, a lever operative by saidprojections, and means actuated by said lever for advancing thespindles.

15. The combination of a carriage, rotary spindles mounted at oppositesides of said carriage and endwise movable the carriage beingrcciprocatory in a. direction transverse to the axes of said spindles, acaln, connections between the cam and the carriage for operating thelatter, and means operated by said cam and comprising a pawl and ratchetdevice, Afor advancing said spindles.

i6. The combination of a carriage, rotary spindles mounted at oppositesides of the carriage and movable in the direction of their axes thecarriage being reciprocatory in a direction transverse to said axes, acam, connections between the cam and the carriage for operating thelatter, a ratchet wheel, a pawl coperative with the ratchet, a lever towhich said pavvl is operatively connected, the cam having means tooperate said lever, and means operative by the ratchet wheel foradvancing said spindles.

In testimony whereof I affix my signature in presence of two witnesses.

BENGT M. W. HANSON.

Witnesses:

F. E. ANDERSON, JOHN D. VOOD.

